Electrolux W3105H Service Manual

40
40. Heating
4
Service
Manual
438 9146-41/03
03.20
Function
Electric heating
The three heating elements in the machine are
connected to separate phases and are switched
on and off using one or two heating contactors,
K.21 and K22 (two contactors are used for higher
heating power). The heating contactors are
controlled by the programme unit A1 via output
X8:1 on I/O card 1 A11. The control signal is fed
via the communication card A21.
The programme unit receives information on the
water temperature in the machine through an
analogue signal from the temperature sensor
situated in the outer drum. The programme unit
controls the heating contactors to achieve the set
water temperature for the current washing
programme.
When there is no water in the drum, the
programme unit prevents switch-on of the
elements. If an error would nevertheless cause
the elements to switch on, a slow-blow fuse
triggers to switch them off again. Then the
heating elements have to be exchanged.
Steam heating
The steam valve is controlled by programme unit
A1 via output X8:1 on I/O card 1 A11. The control
signal is fed via the communication card A21.
5270, 5271
Programme
unit Al
Card
A21
Heating
element
Temperature sensor
Voltage supply
K21
Programme
unit A1
Card
A21
Heating
element
Voltage supply
K21
K22
5272
2
Fig.
2
3
Fig.
3
Rear control unit
Steam
valve
I/O card 1 A11
Programme
unit A1
Card
A21
I/O card 1 A11
I/O card 1 A11
Temperature sensor
Temperature sensor

Electrolux W3105H Specifications

General

Brand	Electrolux
Model	W3105H
Category	Washer
Language	English